baber/WOPTO huggingface dataset:
Patent GB-2036783-A (GB)
Title: Cleaning composition for hard surfaces
IPC: C11D3/14
Filed: 1978-12-13
Abstract: A cleaning composition, particularly for household surfaces, comprising an abrasive, a mineral oil, and a cationic dewatering agent containing an aliphatic or olefinic hydrocarbon group, and optionally an antistatic agent/emulsifier of the general formula:-   <IMAGE> wherein x and y are each independently an integer of at least 1 and R is an aliphatic hydrocarbon group. The composition is used as an aqueous solution and to impregnate a substrate, such as a non-woven cloth or a porous sponge, which is then dried. The impregnated substrate is reactivated by moistening with water. An emulsion stabiliser/mutual solvent is needed to stabilize the aqueous solution; the stabilizer/solvent containing at least one hydroxyl group and at least one ether group. The cleaned surface is polished by the cleaning composition and a water- repellent film left behind. <IMAGE>
Patent GB-2010478-A (GB)
Title: Method and Apparatus for Testing Lenses
IPC: G01M11/02
Filed: 1978-12-18
Abstract: In a lens testing apparatus for lenses having a large depth of field, an optical grating 6 is positioned in the film plane of the lens 3 being tested. A rotating perforated mask, 12 (also Fig. 2 not shown) produces scanning images on the grating 6 which are sensed by a photodiode 7. The scanning performed at a first effective distance and at a second effective distance by means of a beam combiner 15 containing a convex 17 and a concave lens 16 Fig. 3. Signals proportional to the light intensities are sensed through the grating for the two scanning images and are combined (Fig. 4 not shown) to provide an indication of a lens characteristic. The signals are added to indicate lens sharpness, and are subtracted to indicate the distance at which the lens is focused. A "go/no go" indicator may be used for sorting. The apparatus shown in Figure 1 is intended to include a sensing unit 4 combining the grating 6 and the photodiode 7 which replaces the film cartridge in a camera and operates during normal shutter opening. <IMAGE>
Patent GB-2018687-A (GB)
Title: Self-stabilising oscillatory floating tower
IPC: B63B39/00
Filed: 1979-01-22
Abstract: A self-stabilising oscillatory offshore floating tower comprises a cap (10) at its upper end connected by a column (9) to a buoyancy chamber (4) which is at least partially filled with air (13) to provide partial pneumatic damping of vertical movement of the tower. The tower is ballasted at its lower end to make it float upright. The column connecting the cap to the buoyancy chamber is tapered to withstand the bending moments generated by the pressure of the seawater on anti- swell protection devices (not shown) which the tower is intended to support adjacent to the vertical wall of a tabular iceberg (3) for example. <IMAGE>
Patent GB-2029909-A (GB)
Title: Fluid motor
IPC: F03B17/06
Filed: 1979-04-02
Abstract: The motor is a vertical rotation axis wind or water driven device comprising a central column with a rotating blade support structure in which are mounted three or more blade assemblies, each consisting of a main blade, a control blade and a cam system. Each of the blade assemblies is able to rotate freely within the support structure with complete independance from each other under control of individual cam systems located on the support structure at each blade assembly mounting.
Patent GB-2021391-A (GB)
Title: Furniture composed of modular elements of U-shaped cross-section
IPC: A47B47/04
Filed: 1979-05-02
Abstract: Furniture is composed of modular elements in the form of U-sections, in which certain of the U-shaped elements exactly embed or fit in the U-shape of the element of next larger size. <IMAGE>
Patent GB-2020830-A (GB)
Title: Thermally Stable Measuring Apparatus Employing Magneto- electric Devices
IPC: G01R33/06
Filed: 1979-05-23
Abstract: A measuring apparatus comprising two carrier domain magnetometers (C.D.M.'s) 1,2 arranged in close proximity so as to be at substantially the same temperature, the two C.D.M.'s being supplied differently with bias 3a, 4a and a signal 5 to be measured; and combining means (41-44) for combining the outputs of the two C.D.M.'s to produce an output signal S which is independent of their temperature and representative of the value of the signal to be measured. The devices may be arranged orthogonally, one with its domain path plane parallel to the signal flux such that this has no effect. Alternatively the signal flux is the same for each device but the basses are oppositely directed. In other examples the devices are at an angle to both the signal flux and bias fluxes. <IMAGE>
Patent GB-2050956-A (GB)
Title: Improvements in or relating to radio beacons
IPC: H02J17/00
Filed: 1979-06-21
Abstract: The invention provides a radio distress beacon comprising a transmitter (16), a power source (17) for the transmitter (16), an antenna (19) and a casing (11, 14, 15) enclosing the transmitter (16), the power source (17), and the antenna (19). The casing also includes a switch (18) for automatically actuating the transmitter (16) when the beacon is released from its support means. The casing (11, 14, 15), by containing the antenna (19), protects the antenna (19) against accidental damage and, further, presents a smooth shape and configuration which is less readily snagged than conventional beacons. <IMAGE>
Patent GB-2030856-A (GB)
Title: Collapsible umbrella
IPC: A45B19/10
Filed: 1979-08-20
Abstract: Components of the umbrella frame are pivotally interconnected as at 11, 6(3), 6(1) and 6(2) (Figure 3) to define quadrilateral shapes. When the umbrella is fully open the presence of links 11, each link 11 having two spaced pivot points attached to a rib 7, 8, results in the members 4 being able to occupy positions in which they lie perpendicular to the umbrella stick 1 (thereby facilitating the final opening stages of the umbrella) without the necessity to include sliding pivots at 6(2). Links 11 also permit very thin quadrilateral shapes to be achieved so as to give a large canopy spread (umbrella open) for a relatively small package size (umbrella closed). <IMAGE>
Patent GB-2031253-A (GB)
Title: Soil cultivator
IPC: A01B49/02
Filed: 1979-09-12
Abstract: An implement combination for soil loosening and seed bed preparation which can be attached to a tractor, comprises at least two loosening members 6 arranged in front of a motor-driven rotating shaft 18 which is mounted transverse to the direction of travel and has mounted thereon prongs or cutting blades whose ends describe paths of movement which in part extend forward beyond the retaining arms 5 of the loosening members, the shaft 18 being vertically adjustable relative to the retaining arms 5. <IMAGE>
Patent GB-2037879-A (GB)
Title: A Dual-pump Assembly Comprising Two Axial Piston Pumps
IPC: F04B1/22
Filed: 1979-10-31
Abstract: The assembly has two tilting head pumps with a common tilt glider 23 on whose centre a control unit 31 acts directly. The tilt glider has roughly semi-circularly arranged ducts 25, separated by webs, which communicate with the pressure sides of the cylinder blocks 11 and which leave the respective suction sides of said blocks exposed. <IMAGE>
Patent GB-2039045-A (GB)
Title: Bellows
IPC: G01L7/06
Filed: 1979-11-27
Abstract: A method of making a non-corrosive plastic bellows by ultrasonic welding inner and outer flanges of discs with cylindrical and half-cylindrical horns, respectively. The half-cylindrical horn and a fixture used therewith have lips to fit on opposite sides of a pair of contacting outer flanges and in between two pairs of flanges. The inner flanges are thus welded first.
Patent GB-2041233-A (GB)
Title: Blood filter
IPC: A61M1/36
Filed: 1980-01-31
Abstract: A blood filter comprises a core (1) within a housing and on which is mounted a packing of a single plastics monofilament or strands of long monofilaments of a diameter approximately equal to the diameter of the blood corpuscles. The packing comprises a single uniform winding (2) in or a succession of uniform windings of the filamentary material. In the case of successive windings, the winding density increases in the direction of the blood flow. A partition wall (6) is provided within the housing below the core to define a drip chamber (8) leading the filter outlet (5), and the filter inlet (4) may be in the form of a hollow needle. Core (1) is a filter screen, but in Figs. 2, 3 (not shown) the core is impervious with external grooves for filtered blood flow. A by-pass bridged by a hydrophobic membrane conveys air past the filter element. <IMAGE>
Patent GB-2455230-A (GB)
Title: Supersonic flight vehicles
Inventor: LEEK STANLEY
IPC: F42B10/00
Filed: 1980-03-06
Abstract: A supersonic flight vehicle, in particular a guided weapon has radiation sensitive apparatus (3) for guidance and/or surveillance purposes carried behind a radiation transparent window (4), the window (4) being formed within an open recess (5) in the weapon nose, the recess (5) being such that at supersonic speeds it forms shock waves which trap air within the recess (5) to provide a kinetic heat insulant for the window (4).
Patent GB-2073911-A (GB)
Title: System for the control of temperature and humidity within a greenhouse
IPC: A01G9/24
Filed: 1980-04-15
Abstract: A system for the control of temperature and humidity in a greenhouse relies on a heat pump and various sensors for the measurement of temperature and relative humidity both inside and outside the greenhouse. Conditions inside and outside the greenhouse are analysed to fail within a particular class and the classes of weather conditions are matched to provide an appropriate control strategy for the greenhouse. The purpose of the invention is to provide for the optimisation of the extraction of useful heat by means of refrigerative de-humidification of the greenhouse and to utilise this heat to minimise the amount of supplementary heat required for the greenhouse, or as a heat source for other heating purposes. It is also the purpose of the invention to provide for the optimisation of the extraction of purified (distilled) water from water supplied to the plants.
Patent GB-2054400-A (GB)
Title: Oil filter
IPC: B01D27/08
Filed: 1980-07-16
Abstract: A disposable oil filter designed to facilitate automatic assembly comprises a cup shaped canister (12), a reversible spring disc (26) that can be placed into the canister (12) either way up and which will gravitate to lie either face up on the base of the canister when dropped therein. A filter element (22) is then placed onto the spring disc (26) and the canister (12) is closed by an end plate (14) trapping the element against the resilient disc. <IMAGE>
Patent GB-2084163-A (GB)
Title: Reaction injection molded polyurethane
IPC: C08G18/66
Filed: 1980-09-22
Abstract: A reaction injection moulded polyurethane elastomer comprises the reaction product of an aromatic polyisocyanate, a high molecular weight polyether trio containing an internal mixed propylene oxide-ethylene oxide segment comprising 2-35% ethylene oxide by weight and 65-98% by weight of propylene oxide and an ethylene oxide cap, such that said polyol has a primary hydroxyl content greater than 50% and preferably greater than 90%, and a chain-extending agent. A method of making the elastomer is also described.
Patent GB-2065861-A (GB)
Title: Countercurrent heat exchanger with a dimpled membrane
IPC: F28F1/06
Filed: 1980-09-30
Abstract: A heat exchanger comprises a housing 12, a chamber 14 mounted within the housing and a membrane 16 of dimpled construction connected to either or both the housing and the chamber. The membrane surrounds the chamber and forms a fluid-tight barrier between a first annular zone 18 that extends between the membrane and the chamber and a second annular zone 20 that extends between the membrane and the housing. Inlets and outlets 22i, 22o, 24i and 24o are provided for introducing a first fluid into the first zone and a second fluid into the second zone, and a pressurised plug 28 is mounted within the chamber 14 which has slots 32i, 32i at its ends communicating with the first zone 18. <IMAGE>
Patent GB-2086686-A (GB)
Title: Chroma keying
IPC: H04N9/75
Filed: 1980-10-15
Abstract: Chroma keying, or colour separation overlay apparatus, incorporates hue suppression of the foreground video signal by subtraction (22) of the keying signal from the foreground signal blue component. To avoid the need for non-linear clipping of the keying signal prior to such hue suppression, the keying signal is formed as the product of two signals each derived from the foreground video signal, one of these two signals being zero when the key colour component of the foreground video signal is zero. The preferred keying signal is:  (B-L) {1 - (H-L)} where B is the key colour component, H is the greatest of the other two components, and L is the least of the components. <IMAGE>
Patent GB-2062876-A (GB)
Title: Aircraft load indicator
IPC: G01G19/07
Filed: 1980-11-04
Abstract: A load indicator for an aircraft having an attitude meter and supported by undercarriage support members when parked includes: a plurality of load transducers, 1, 2 and 3, for mounting on the support members with outputs connected to a computing unit, 4, which also has an input for connecting to the attitude meter, 5, and a load indicator display, 12, connected to receive an output from the computing unit and display aircraft load weight. The load indicator therefore automatically takes account of slope. Additional inputs to the computing unit may be introduced to take account of eg air temperature 6, altitude 8. The load indicator display may indicate the maximum all-up-weight point and also whether too much load lies to port or starboard or fore or aft. <IMAGE>
Patent GB-2072126-A (GB)
Title: Improvements in and relating to face conveyors
IPC: B65G19/00
Filed: 1981-03-20
Abstract: A combined face conveyor and stage loader for use in longwall coal mining methods consists of a continuous length of chain comprising alternate sections of chain links and blocks (20), each block (20) having two flight bars hingedly attached to it, teeth (25) of sprocket wheels (5) driving the conveyor engaging the chain blocks (20) to supply motive power to the chain while the flight bars adjacent to each wheel (5) are pivoted out of engagement with the wheel. The return chain path can be either located under the haulage chain path or adjacent to the haulage chain path in which case the flight bars of the return chain are kept in a vertical position. <IMAGE>
Patent GB-2080010-A (GB)
Title: High Tension Ignition Cable
IPC: H01T13/06
Filed: 1981-06-15
Abstract: A flameproof cable 2 has insulated wires 22, 23 that extend from a gas-tight connector 4, each wire having a braided screening sleeve 26, 27 the sleeves being in electrical contact with one another within the cable. A flexible insulative sleeve 21 insulates the sleeves 26 and 27 from a flexible, conductive outer conduit 20. The cable 2 is included in an ignition system by joining the connector 4 to an ignition unit (3, Fig. 1 not shown) in which the outer conduit 20, the screening sleeves 26 and 27 and one of the wires 23 are connected to a common earth (31). The other end of the cable 2 is joined with an igniter (1), the outer housing 2 of which is connected with the outer conduit 20 of the cable and is earthed. The electrodes (10, 11) of the igniter are connected to respective wires 22 and 23. <IMAGE>
Patent GB-2105949-A (GB)
Title: Telephone/data terminal
Inventor: SLATTER RICHARD CYRIL
IPC: H04Q11/04
Filed: 1981-07-14
Abstract: In an Integrated Services Digital Network (ISDN), in which intelligence is conveyed in digital form to the subscriber's premises, it is possible to provide for a number of different services in addition to speech. The speech is conveyed in digital form, at 64 kb/s available on an 80 kb/s bit stream. The present arrangements use an interface (2) which includes a multiplexer/demultiplexer (6) between the various peripherals and the line. In one direction this merges the bit streams and in the other direction it "un-merges" them. The control is such that in addition to speech it is possible to handle one or two 8kb/s channels or a 16kb/s channel. Various methods of selecting which peripherals to be connected to the multiplexer/demultiplexer are described, such as switched selection in which different bit streams can each be switched to any one of a number of peripherals. An alternative method of selection is to use a set of data busses, one per bit rate channel, with gating between the busses and the peripherals. A further method uses a set of closed loops or rings one per bit rate channel. <IMAGE>
Patent GB-2088842-A (GB)
Title: Separation of cobalt and nickel
IPC: C22B23/00
Filed: 1981-11-27
Abstract: Preferential precipitation of cobalt from aqueous acidic sulphate solutions of nickel and cobalt is carried out by introducing at least a stoichiometric amount of Caro's Acid containing no more than 1 mole of hydrogen peroxide per 8 moles of H2SO5 into the nickel/cobalt solution progressively over a period of at least 2 hours, whilst maintaining the solution at a pH from 3.1 or 3.5 up to 4.7 by addition of an alkali metal hydroxide carbonate or bicarbonate, or at 4.3 to 4.7 with the corresponding ammonium compound, and, thereafter separating the precipitate from the aqueous cobalt depleted solution.
Patent GB-2089957-A (GB)
Title: Headlamp for motor vehicles
IPC: B60Q1/04
Filed: 1981-12-17
Abstract: A headlamp housing for motor vehicles has a cap (10) having a perpendicular passage (16) whose top opening extends upwardly so that in use it lies in the path of air moving over the cap and is chamfered such that suction is produced in the passage during forward travel of the vehicle. In order to prevent condensation from settling in the cap, a tubular member (21) interconnects the passage (16) and the interior (14) of the cap (10), the cap (10) having an annular passage (12) communicating at its lower end with the atmosphere via slots (13) at its upper end and with the interior space (14) via grooves 15. Movement of air between the interior space (14) and the atmosphere takes place when the headlamp is switched on and off. When the vehicle is travelling, air flows through the interior space (14) as a result of atmospheric air flowing into the slots (13) and air flowing out of the interior space through the upper opening (17) of the passage (16). <IMAGE>
Patent GB-2106185-A (GB)
Title: Rotary positive-displacement pumps
Inventor: VOGT HARALD
IPC: F04C14/06
Filed: 1982-01-14
Abstract: In a sliding-vane pump for an hydraulic system the vanes are mounted radially or non-radially in the rotor 5 and to interrupt the pumping action the vanes can be held in a retracted position by closure of a valve 12 e.g. electromagnetically, through which the vanes are biassed towards the rotor by the delivery pressure. The vanes may be also held in the retracted position by an axially- movable ring 14, which is operated by a slider 18 automatically when the valve 12 closes. Alternatively, the vanes are mounted in the stator 4 and to interrupt the pumping action a valve is opened to connect the delivery side of the pump to the suction side, springs that urge the vanes towards the rotor being raised by the valve when it opens, Figs. 3 to 5 (not shown). <IMAGE>
Patent GB-2095351-A (GB)
Title: Mechanically controllable power booster
IPC: B60T13/569
Filed: 1982-03-18
Abstract: In a casing 1 of a power booster, a working piston 5 is located axially slidably which subdivides the casing 1 into a low-pressure chamber 6 and a working chamber 8. Extending from the disc-shaped reinforcing plate 9 of the working piston 5 is a cylindrical portion 24 projecting into the low-pressure chamber 6 and having extending into it the end of a cylindrically control value housing 11, the end surface 47 of the control housing abutting reaction disc 44. In this position, the disc-shaped plate 9 is positively engaged with the control housing via wall portions 30 which are sheared inwardly out of the attachment 24 and extend radially into an annular groove 23 of the control housing 11. In this arrangement, the wall portions 30 will be urged into the annular groove 23 so far that openings 40 will be caused at the attachment 24 interconnecting the low-pressure chamber 6 and the annular groove 23. The annular groove 23 is in communication with a valve elements 16 through a connecting channel 18 accommodated in the control housing 11. Arranged at the free end of the cylindrical portion 24 is a bottom disc portion 50 including a bore 51 through which the push rod 45 extends into the low-pressure chamber 6. <IMAGE>
Patent GB-2099892-A (GB)
Title: Snow plough
IPC: E01H5/06
Filed: 1982-05-07
Abstract: A snow plough has a framework (1) having rear arms (3, 4) securable at their rear ends to the front of a vehicle and a forward part (2) to which a blade (5) is pivoted about a vertical pivot (6). The forward part (2) of the frame is formed in two parts (2a, 2b) with a parallelogram linkage with horizontal pivots between the two parts (2a, 2b). Control members (7, 8) can be lengthened or shortened selectively to slew the blade (5) about the pivot (6) or to raise the blade (5) about the parallelogram linkage to an inoperative position. The control members (7, 8) include electric motors to be powered from the electrical system of the vehicle on which the snow plough is mounted. <IMAGE>
Patent GB-2101138-A (GB)
Title: Polymer compositions
Inventor: HOWELL BARRY GEORGE
IPC: C08F8/42
Filed: 1982-05-25
Abstract: A cross-linkable flame retardant composition comprises:   (1) a base polymer having a hydrocarbon backbone with pendant ester groups in the structure   <IMAGE>     (2) a flame-retardant additive containing Cl and/or Br atoms; (3) a silane of the formula X-A-SiY<1>Y<2>Y<3> wherein X is OH, SH, NH2 or R<1>-CO-O- wherein R<1> is a C1 to C18 alkyl group, A is a non- hydrolysable organic divalent radical, and at least two of Y<1>, Y<2> and Y<3> are hydrolysable groups; and (4) a catalyst effective to induce exchange between the A-SiY<1>Y<2>Y<3> radicals of the silane and the -R radicals of the pendent ester groups and/or between the O-Si-Y<1>Y<2>Y<3>, S-Si-Y<1>Y<2>Y<3> or -NH-Si-Y<1>Y<2>Y<3> radicals (as the case may be) of the silane and the -Or radicals of the pendent ester groups.   The catalytic exchange reaction introduces side-chains into the polymer which, after hydrolysis, form cross-links by condensation. The grafting reaction is unaffected by traces of acid derived from the chlorinated ingredients, unlike the conventional process for peroxide grafting of an unsaturated silane.
Patent GB-2107945-A (GB)
Title: Motor variable frequency drive
Inventor: KNOX DICK L
IPC: H02M7/5387
Filed: 1982-09-03
Abstract: A speed control for an AC motor varies the frequency and amplitude of the applied voltage. The speed control includes a rectifier 17 which converts the AC power supplied to negative and positive DC. A switch circuit 23 connects each power conductor leading to the motor with one of the DC voltages. The switches are switched on and off to provide alternately positive and negative voltage. Controls for the switches include an oscillator 35 which provides pulses of frequency that can be varied. A binary counter 39 counts the pulses from the oscillator and provides binary outputs. A memory unit 41 provides a programmed output to the switches for each binary output received. In one embodiment, the amplitude of the output voltage is varied by comparing a triangular wave from the oscillator with the DC input level. Enabling pulses equal to the excess of the triangular wave over the DC input enable the memory unit. In another embodiment, the enabling pulses are provided to an amplitude switch which is cycled to vary the DC rail voltage. <IMAGE>